Fifa compromised by allowing the British teams to wear poppies - which honour those killed in war - on black armbands, but not stitched on to the shirt like in the Premier League (pictured).
Many competitors wore a black ribbon and observed a 30 second silence in honour of those killed and injured in last week's bombing at the Boston marathon.
The Home Secretary, Theresa May, has joined hundreds of people to honour police officers killed in the line of duty, at the National Police Memorial Day service in Belfast.
It also invites the UNESCO General Conference to propose that a one-minute silence be observed in newsrooms worldwide on World Press Freedom Day (3 May) to honour the journalists killed each year.
In Slovakia, fans lit candles for their star player Pavol Demitra, while Czechs paid similar respects in the Old Town Square in Prague to honour their three compatriots killed in the crash: Josef Vasicek, Karel Rachunek and Jan Marek.
The Abhijit Air Safety Foundation - formed in honour of fighter pilot Abhijit Gadgil who was killed in a crash three years ago - has been lobbying against the use of MiGs.
Locals have turned out to honour the corteges of more than 100 service personnel killed in Iraq and Afghanistan, as they made their way from nearby RAF Lyneham to a morgue in Oxford.