Typical wartime speech should have any angry yet passionate tone. Anger on enemy will make the native people support the government, forces and bear tough times. It should also be passionate, so that a sense of patriotism is evoked which will make the natives ready to sacrifice, serve the country and stand with government/country in the worst of the conditions.
Some truths may be harsh and discouraging to the people of the country. Secrets should never be revealed and never ever to people during wartime.
Rehearsed use of physical gestures and an organized structure have no use in wartime speeches - they are better for peacetime.
Look at the sentence fluidity, sound it out. Which sounds 100 times better? A. That is because there is no need to add most, sincerely already adds a note of "most sorry".
