Complex sentence: The Bty deployed four STA patrols and a C2 element to Macedonia in February 1999 as part of the NATO force preparing to intervene in Kosovo in response to the humanitarian crisis caused by Serbian military action in the country.
Split into simpler sentences: The Bty deployed four STA patrols and a C2 element to Macedonia in February 1999. This was as part of the NATO force preparing to intervene in Kosovo in response to the humanitarian crisis caused by Serbian military action in the country.