Complex sentence: The outpost had been used as a temporary OP (OPT) but Nordbat wanted to turn it into a permanent observation post but after a series of sniper attacks by Bosnian Serb forces the staff of Nordbat 2 decided it was time to "show the flag".
Split into simpler sentences: The outpost had been used as a temporary OP (OPT) but Nordbat wanted to turn it into a permanent observation post. Following a series of sniper attacks by Bosnian Serb forces, the staff of Nordbat 2 decided it was time to "show the flag".