Complex sentence: Togther with the overthrown Baden Government he and his troops had to seek refuge in Switzerland, with the victors following behind and summarily executed officers of the revolutionary army who fell into their hands.
Split into simpler sentences: Togther with the overthrown Baden Government, he and his troops had to seek refuge in Switzerland. The victors, in control of occuoied Baden, were summarily executing those officers of the revolutionary army who fell into their hands.