War Establishment, British 18 aeroplane squadron (higher establshment) 13 May 1917.

The Nafziger Collection contains a compilation of orders of battle from 1600 to 1945 with over 7000 individual pdf files. It began with the author's interest in Napoleonic Wars, and steadily grew to other areas because of the gaming public's interest in these highly detailed historical orders of battle. Sources range from published works to actual archival documents, which represent the largest single source. Nearly all orders of battle break down to the regimental level. The availability of strength figures and artillery equipment varies from period to period. This collection was provided through the generous donation of George Nafziger to the Combined Arms Research Library.