 In the early 1880s, the next step was taken by the Childers Reforms, which formally amalgamated the regiments into a single two-battalion unit along with the militia and volunteers.This meant that, in general, one battalion of each infantry regiment was based at home with its depot and one was based overseas, which meant that roughly half the Regular Army was available in the United Kingdom for responding to any new overseas commitments.It was estimated, by the "Stanhope Memorandum" of 1891, that a mobilisation of the whole Army would provide two full Army Corps of regular troops—with units reinforced individually by reservists—and a third composed partly of Regulars and partly of Militia, with the remaining auxiliary forces used for garrisons in fixed defences at the ports and around London.