Why does Churchhill most likely begin his speech by discussing Britain's recent battle loss

Winston Churchill most likely began his speech by discussion about the battle loss of Britain so that he will be seen as a knowledgeable one. He also wants the people to know the truth about the situation and be honest with them.

Explanation:

Winston Churchill in his famous speech "We Shall Fight On The Beaches" gave an exceptional address to his countrymen in the House of Commons about the loss of Britain in the war. This act may sound problematic or even discouraging for the people to hear of their country's loss. But Churchill holds the idea that the people deserve to know the truth. He gave an honest and sincere representation of what was happening in the war, though it may not be good news. He also wants to address the immediate concerns of the people of England and wanted to show that he was trustworthy and knowledgeable of the situation.

Because he wants to show he is knowledgeable and trustworthy