42nd LAA Rgts, two S/L troops and some motorised infantry. Eighth Army seized upon this collection to act as a blocking force, giving Calvert-Jones two infantry brigades in addition. 'Calforce' held defensive positions at 10 LGs, providing its own artillery support from AA guns sited for ground tasks. It also developed dummy LGs, complete with fake AA positions. Calforce remained in position during the First Battle of El Alamein, had 9th Independent Armoured Bde under its command from 26 August to 8 September, and was not withdrawn from the front line until later in September.