The original Woolmer Light Railway was fully authorised by an Act of Parliament in 1902.
In 1905, the London and South Western Railway had opened the Bentley and Bordon Light Railway, linking to a new station at Bordon.

The War Office decided to formalise the Woolmer Light Railway as a full-time instructional installation, having had to move the 8th and 10th Railway Companies of the Royal Engineers from Chatham, to support the 53rd Company at Longmoor for the hut moving task.
Due to the steep grades of the Woolmer Light Railway, quickly surveyed but overcome by anchored steam power, the Royal Engineers surveyed an amended alignment for the proposed 4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge line, running closer to the Whitehill – Greatham road.

Workshops, stores and a locomotive shed were built at Longmoor, some of the materials used having been salvaged from the Suakin to Berber military railway, built during the 1880s Sudan Campaign.
After works to convert and relay the line were completed in 1907, it became known from 1908 as the Woolmer Instructional Military Railway.
After the Liss extension was opened in 1933, with a platform adjacent to those of the Southern Railway serving the Portsmouth Direct Line, it was renamed the Longmoor Military Railway in 1935.
 Woolmer remained one of the blockposts (signal boxes) on the LMR.

Although initially a single-track (later double track from Whitehill to Longmoor Downs station) end-to-end line running north/south from Bordon eventually to Liss, from 1942 an additional loop ran eastwards from Longmoor Downs station at the camp via a station at Hopkin's Bridge to a triangle junction at Whitehill.
This provided circular running, allowing for improved training without the need to run round trains at the termini.
 The new line was called the Hollywater Loop.

The permanent base of the 79 Railway Squadron RLC, as a training railway for both the Army and later the Railway Inspectorate, it was often being constructed/deconstructed.
The original Woolmer Light Railway was fully authorised by an Act of Parliament in 1902. In 1905, the London and South Western Railway had opened the Bentley and Bordon Light Railway, linking to a new station at Bordon.
The War Office decided to formalise the Woolmer Light Railway as a full-time instructional installation, having had to move the 8th and 10th Railway Companies of the Royal Engineers from Chatham, to support the 53rd Company at Longmoor for the hut moving task. Due to the steep grades of the Woolmer Light Railway, quickly surveyed but overcome by anchored steam power, the Royal Engineers surveyed an amended alignment for the proposed 4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge line, running closer to the Whitehill – Greatham road.
Workshops, stores and a locomotive shed were built at Longmoor, some of the materials used having been salvaged from the Suakin to Berber military railway, built during the 1880s Sudan Campaign. After works to convert and relay the line were completed in 1907, it became known from 1908 as the Woolmer Instructional Military Railway. After the Liss extension was opened in 1933, with a platform adjacent to those of the Southern Railway serving the Portsmouth Direct Line, it was renamed the Longmoor Military Railway in 1935.  Woolmer remained one of the blockposts (signal boxes) on the LMR.
Although initially a single-track (later double track from Whitehill to Longmoor Downs station) end-to-end line running north/south from Bordon eventually to Liss, from 1942 an additional loop ran eastwards from Longmoor Downs station at the camp via a station at Hopkin's Bridge to a triangle junction at Whitehill. This provided circular running, allowing for improved training without the need to run round trains at the termini.  The new line was called the Hollywater Loop.
The permanent base of the 79 Railway Squadron RLC, as a training railway for both the Army and later the Railway Inspectorate, it was often being constructed/deconstructed.
Bordon and Longmoor Military Camps