Sometimes even the smallest piece of information is important for a book. An example: I thought it useful to know, if not report, the day of the week the pivotal events of the Battle of Bellicourt Tunnel took place on. Who helped me find it? Google. The question I typed was September, 29, 1918 – What day of the week is… Before I typed any more words it took me to: Qpzmdayoftheweek.qpzm.com/whatdayoftheweek/september/29/1918
Since it was a Sunday it gave me a chance to have one of the characters I am already developing, a chaplain for the 30th Division, offer prayers and deliver a short sermon, and reflect himself on the importance of this battle that was to take place on this Sunday morning.
I will not use this particular chaplain as my character. I present him as a typical representative of 30th Division chaplains. http://www.usmilitariaforum.com/forums/index.php?/topic/224075-wwi-chaplain-arthur-i-foster-117th-inf-59-inf-brig-30th-div/
I surprise myself with the questions I come up with and to which books and the internet have the answers.