Temporary military strongpoint and redoubt established during the General Strike in 1926, within a former chalk pit on the south side of Crete Hall Road, Northfleet, then being developed by Bowaters as a paper mill. The redoubt was formed from an existing brick or block walled building, enclosed for the emergency with a corrugated iron fence and barbed wire entanglements. Other parts of the factory site were defended by barbed wire and sentries, as part of measures to secure a strategic supply of paper manufacturing for the government, which feared the possibility of a revolution during the strike. The defences lasted only a few weeks and were presumably removed soon after.