What is the fine-grained topic of the following text: Due to insufficient planning and lack of a workable entrance strategy, soldiers of the 1st and 29th Infantry as well as Army Rangers are now bogged down and sustaining heavy casualties inflicted on them by dug-in insurgent positions located 170 feet above them on cliffs overlooking the beaches which now resemble blood soaked killing fields at the time of this mid-morning filing. Only return the topic.
Military strategy failures and their consequences