TIL one of the most widely used symbols for medical assistance is actually the Swiss flag, and not a medical symbol User teoSCK, in the Today I Learned (TIL) subreddit, 15 Jul 2017
TIL the Red Cross emblem is intentionally the inverse of the Swiss flag in honor of the founder's dual citizenship User safetymeetingcaptain, in the Today I Learned (TIL) subreddit, 01 Jul 2014