In british OOB was forgoten famous 37mm Bofors AT guns was used by 7th Armoured Division on Western Desert and in Ethiopia. They were used too by polish indenpendent Carpathian Brigade. This guns was bought in prewar times from two sources . For Sudan goverment from Sweden and for Britain from poland.
source
http://www.btinternet.com/~ian.a.pat...y.htm#37bofors