Complex sentence: The second round catching the tank on the edge of a ditch and flipping it over as the same round blew Pool out of the commander's hatch, seriously slashing open one of his legs with a shell splinter.
Split into simpler sentences: The second round caught the tank on the edge of a ditch and flipped it over. The same round blew Pool out of the commander's hatch, seriously slashing open one of his legs with a shell splinter.