What about the use of some of these smaller radials in military vehicles? I can remember my father telling us his tank had to be towed around prior to starting, an inconvenience he did not enjoy as I remember. At least some of these engines were mounted upright (horizontal crankshaft) and would suffer the same problems, correct? Also, if memory serves me, I remember seeing at least one laid flat (vertical crankshaft) in the engine compartment. If so, did IT lock too?