I am looking for some information about the Tobruk defensive positions on the Red Line during the 1941 siege. The permanent fortifications were concrete, pre-war and Italian built. From what I have read and seen, a typical position had 3 weapons pits linked by a communication trench. The Australian offical history mentions that: - the communications trenches were deep and covered over with wood - the weapons pits were comparatively small which limited the number of troops who could defend the post Does anyone know whether the Australians built firing steps in the trenches so they could be used? Most of the photos I've seen of Australian infantry at Tobruk show them in improvised slit trenches. As the permanent positions were approximately 750 yards apart, I assume the slit trenches were sited in the gaps between but I've never read this anywhere. Can anyone point me to a source which covers this? Detailed information I know but I thought I might as well ask!