Australia entered the Second World War on 3 September 1939 with a declaration of war on Germany.
Within the month of September, the 5th Field Artillery Regiment; the 42nd and 43rd Artillery Batteries; the 105th and 111th Artillery Batteries; and the first motor transport for the Batteries' 18 pounder guns and 4.5-inch (110 mm) howitzers, had assembled at the site.
The militia troops from the Signals Corps, the RAE and the AASC were also located at the Kelvin Grove Mobilisation Stores, and the 9/49th Signals Unit and the 61st Battalion were operating out of the 1914 infantry drill hall.

During World War II there were two permanent additions to the Kelvin Grove site.
One was a garage and workshops building for servicing AASC vehicles, made necessary by the Army's process of converting from horse transport to motorised.
Plans for the building were prepared in November 1939 and it is thought construction of the building was completed around 1942.
The other permanent construction was the School for Linesmen-in-Training building, a two-storey, timber-framed and sheeted with fibrous cement building, finished by July 1941.
The still undeveloped lower barracks area was the location of the building, constructed at a price of £2961 by Percy Richard Ayre.
The building was constructed for the Postmaster-General's Department, who agreed to train militia forces at the facility.

Besides the permanent additions to the barracks site, a number of temporary structures were added to accommodate some of the troops mobilised for the war effort.
By the end of the war in 1945, temporary and permanent buildings of various shapes and sizes had spread throughout the Military Reserve.
An area of notable development occurred around the staff officers quarters at the lower barracks.
Here, 27 buildings formed the 2nd Australian Commander Royal Engineers camp.
The buildings were likely to have been standard prefabricated structures of the World War II period, consisting of timber and masonite with fibro sheeting.
A sloping dirt road connected the upper and lower barracks areas at this time, as did a long line of steep steps.

The US Army were also involved with the Kelvin Grove site during World War II.
The parade ground area at the upper barracks site was made level by the US Army, whose alterations created the sunken road that runs past the relocated Toowong drill hall.
Australia entered the Second World War on 3 September 1939 with a declaration of war on Germany. Within the month of September, the 5th Field Artillery Regiment; the 42nd and 43rd Artillery Batteries; the 105th and 111th Artillery Batteries; and the first motor transport for the Batteries' 18 pounder guns and 4.5-inch (110 mm) howitzers, had assembled at the site. The militia troops from the Signals Corps, the RAE and the AASC were also located at the Kelvin Grove Mobilisation Stores, and the 9/49th Signals Unit and the 61st Battalion were operating out of the 1914 infantry drill hall.
During World War II there were two permanent additions to the Kelvin Grove site. One was a garage and workshops building for servicing AASC vehicles, made necessary by the Army's process of converting from horse transport to motorised. Plans for the building were prepared in November 1939 and it is thought construction of the building was completed around 1942. The other permanent construction was the School for Linesmen-in-Training building, a two-storey, timber-framed and sheeted with fibrous cement building, finished by July 1941. The still undeveloped lower barracks area was the location of the building, constructed at a price of £2961 by Percy Richard Ayre. The building was constructed for the Postmaster-General's Department, who agreed to train militia forces at the facility.
Besides the permanent additions to the barracks site, a number of temporary structures were added to accommodate some of the troops mobilised for the war effort. By the end of the war in 1945, temporary and permanent buildings of various shapes and sizes had spread throughout the Military Reserve. An area of notable development occurred around the staff officers quarters at the lower barracks. Here, 27 buildings formed the 2nd Australian Commander Royal Engineers camp. The buildings were likely to have been standard prefabricated structures of the World War II period, consisting of timber and masonite with fibro sheeting. A sloping dirt road connected the upper and lower barracks areas at this time, as did a long line of steep steps.
The US Army were also involved with the Kelvin Grove site during World War II. The parade ground area at the upper barracks site was made level by the US Army, whose alterations created the sunken road that runs past the relocated Toowong drill hall.
Gona Barracks