@heikihenken Princip fired two shots: one killed the Archduke and the other his wife.
So many things went wrong for the Duke and his wife that day, including his driver not being told the new route & his team turning down soldiers to guard the route out ( as they didn't have dress uniforms).
@lennylaw I like the Cromwell but its 75mm gun was not a good late war gun vs German heavy tanks. That's why Fireflies were deployed with them, and the Comet introduced.
A late war Sherman with a 76mm gun, sloped armour and wet storage was better than a Cromwell.
@Tank_Archives It could fire HE rounds, and a HE round was developed.
However, it was not widely issued as the 40mm was considered an anti-tank gun, and secondly, the HE was considered ineffective due to its small size.
Later, the British issued HE rounds to its 6pdr and 75mm armed tanks.
@RomeInTheEast The Byzantines reinforced the walls with earth, and the breaches with rubble and earth at night - they absorb the cannon ball shock better than stone. It worked pretty well for six weeks....
Orban offered his services to the Byzantines first, but they could not afford it....