Sentence 1: 65 soldiers have been killed during the mission : 34 Nigerians , 28 Chadians , 2 Togolese and 1 Burkinabé .
Sentence 2: During the mission , 65 soldiers were killed : 34 Nigerians , 28 Chadians , 2 Togolese and 1 Burkinabé .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?