Beginning in 1946, the United States Army commissioned a project to oversee the replacement of the M24 Chaffee light tank in the reconnaissance role.
For preliminary purposes this hypothetical tank was to be known as T37.
However, in the wake of World War II most armored vehicle development programs suffered from a lack of impetus and inadequate funding.
The T37 concept did not reach viability until 1949, when three disparate prototypes were finally built.
The second prototype of the trio, T37 Phase Two, was selected for further testing and received a unique designation, T41.
In its final, pre-production form this model was known as T41E1 to the US Army.

The T41E1 was envisaged as a highly mobile light tank, capable of undertaking aggressive reconnaissance and being sufficiently armed to engage the latest Soviet medium tanks if necessary.
It was to utilize automotive parts and components already common to other US military vehicles and incorporate a modular hull capable of being converted for a variety of other specialized roles.
For example, the US Army requirement called not only for a light tank, but an air defense platform and an armored personnel carrier based on the same chassis.
A specific powerplant had even been pre-selected for all three proposed vehicles: a Continental or Lycoming six-cylinder, air-cooled gasoline engine.
This made the T41E1 one of the first American tanks to be designed around a preexisting engine type, rather than being built first and then adopting a suitable engine.
Weighing nearly 52,000 pounds, the T41E1 was so heavy it would have easily been classed as a medium tank in its own right only about five years earlier, and was no longer deemed suitable for frequent airborne deployments.

The Army placed orders for the T41 circa August 1950.
The tank was christened the "Walker Bulldog" — after the late General Walton Walker who was killed in a Jeep accident a year earlier — at a demonstration for President Harry S. Truman at Aberdeen Proving Ground in February 1951.

Serial production was delayed by technical difficulties stemming from the decision to incorporate an integral rangefinder directly into the steel turret.
A renewed sense of urgency introduced by the outbreak of the Korean War and increasing demands by the US Army for more tanks resulted in production hurriedly commencing in mid-1951.
The hasty production cycle led to numerous modifications during the course of and after manufacture.
Cadillac repurposed a warehouse in Cleveland in August 1950 and began outfitting the location for production of the Walker Bulldog and other combat vehicles, namely the Cadillac M42 Duster.
The plant, employing 3700, delivered the first production M41 Walker Bulldog in March 1951.
The first eight Bulldogs were delivered to the US Army in July.

By March 1952 over 900 M41s had already been manufactured.
These entered service too late to take part in the Korean War, though some may have been shipped out to US forces in that region just as the fighting ended.
Roughly 1,802 were built, but these suffered from a variety of technical issues due to their somewhat rushed production, and a second mark, the M41A1, was introduced to correct these problems.
Over 4,000 engineering design changes were requested by the US Army between July 1951 and July 1952.
Approval to issue the M41 type to regular units was denied until December 1952, when the new mark was introduced.
Another 1,631 baseline M41s were also relegated to storage at the Ordnance Corps Depot in Lima, Ohio until their deficiencies could be corrected.

The M41A1 was later superseded by the M41A2 and M41A3, which had the advantage of greater ammunition stowage, and considerably simplified gun and turret systems.
Despite these detail improvements, the M41 series did not prove especially popular in US service.
Crew members seated in the turret often complained of limited interior space.
Reconnaissance units criticized the height and size of the design, which reduced its ability to reconnoiter discreetly, and although it was intended for deployment with airborne
Beginning in 1946, the United States Army commissioned a project to oversee the replacement of the M24 Chaffee light tank in the reconnaissance role. For preliminary purposes this hypothetical tank was to be known as T37. However, in the wake of World War II most armored vehicle development programs suffered from a lack of impetus and inadequate funding. The T37 concept did not reach viability until 1949, when three disparate prototypes were finally built. The second prototype of the trio, T37 Phase Two, was selected for further testing and received a unique designation, T41. In its final, pre-production form this model was known as T41E1 to the US Army.
The T41E1 was envisaged as a highly mobile light tank, capable of undertaking aggressive reconnaissance and being sufficiently armed to engage the latest Soviet medium tanks if necessary. It was to utilize automotive parts and components already common to other US military vehicles and incorporate a modular hull capable of being converted for a variety of other specialized roles. For example, the US Army requirement called not only for a light tank, but an air defense platform and an armored personnel carrier based on the same chassis. A specific powerplant had even been pre-selected for all three proposed vehicles: a Continental or Lycoming six-cylinder, air-cooled gasoline engine. This made the T41E1 one of the first American tanks to be designed around a preexisting engine type, rather than being built first and then adopting a suitable engine. Weighing nearly 52,000 pounds, the T41E1 was so heavy it would have easily been classed as a medium tank in its own right only about five years earlier, and was no longer deemed suitable for frequent airborne deployments.
The Army placed orders for the T41 circa August 1950. The tank was christened the "Walker Bulldog" — after the late General Walton Walker who was killed in a Jeep accident a year earlier — at a demonstration for President Harry S. Truman at Aberdeen Proving Ground in February 1951.
Serial production was delayed by technical difficulties stemming from the decision to incorporate an integral rangefinder directly into the steel turret. A renewed sense of urgency introduced by the outbreak of the Korean War and increasing demands by the US Army for more tanks resulted in production hurriedly commencing in mid-1951. The hasty production cycle led to numerous modifications during the course of and after manufacture. Cadillac repurposed a warehouse in Cleveland in August 1950 and began outfitting the location for production of the Walker Bulldog and other combat vehicles, namely the Cadillac M42 Duster. The plant, employing 3700, delivered the first production M41 Walker Bulldog in March 1951. The first eight Bulldogs were delivered to the US Army in July.
By March 1952 over 900 M41s had already been manufactured. These entered service too late to take part in the Korean War, though some may have been shipped out to US forces in that region just as the fighting ended. Roughly 1,802 were built, but these suffered from a variety of technical issues due to their somewhat rushed production, and a second mark, the M41A1, was introduced to correct these problems. Over 4,000 engineering design changes were requested by the US Army between July 1951 and July 1952. Approval to issue the M41 type to regular units was denied until December 1952, when the new mark was introduced. Another 1,631 baseline M41s were also relegated to storage at the Ordnance Corps Depot in Lima, Ohio until their deficiencies could be corrected.
The M41A1 was later superseded by the M41A2 and M41A3, which had the advantage of greater ammunition stowage, and considerably simplified gun and turret systems. Despite these detail improvements, the M41 series did not prove especially popular in US service. Crew members seated in the turret often complained of limited interior space. Reconnaissance units criticized the height and size of the design, which reduced its ability to reconnoiter discreetly, and although it was intended for deployment with airborne
M41 Walker Bulldog