The 222nd Infantry Brigade was a Home Service formation of the British Army that existed under various short-lived titles in both the First and Second World Wars On the outbreak of World War I, the Territorial Force (TF) immediately mobilised for home defence.

21st Battalion, which had been guarding the Northumberland Coast, moved to Herne Bay, Kent and joined the 10th Provisional Brigade.

The 2nd Provisional Brigade was billeted in and around Clacton and St Osyth in Essex.

Part of their role was physical conditioning to render men fit for drafting overseas, alongside units of the Training Reserve.

[21][22] 222nd Brigade had no divisional allocation and remained subordinate to Southern Army and later Eastern Command.