1. Lapel Button = a brass lapel pin which was shaped as an eagle, and which was referred to affectionately as the "Ruptured Duck". This was not a special award, everyone who passed thru separation received one (except for those charged under AW 107, below).
2. AW 107: AW = Articles of War 107 = a particular section of the articles, in this case, it related to lost time due to detention, military trial etc. He lost no time under this article.
3. ETO = European Theater of Operation, where he served his time overseas.
In addition, I identify two ships which carried personnel to Iceland during 1942:
SANTA ELENA SANTA ROSA.
Both left NY P/E, 30 Apr 42; arrived Iceland, ? May 42 (probably around the 4th/5th).
There may have been other troop carriers involved, but these are the only ones listed.