A service was held at Glasgow Cathedral and attended by Prince Charles, prime minister David Cameron, first minister Alex Salmond and UK politicians, followed by a wreath-laying ceremony at the cenotaph in George Square.
The city service was one of three events — in Glasgow, Belgium and London — forming the UK government’s centenary programme.
Glasgow lord provost and councillor Sadie Docherty said: “I hope people will be inspired over the coming four years to learn more about their own family and community’s war history.
“Glaswegians must have been scared and worried about what it would mean to them and their family. As we now know it was a war that changed our world forever.”
The city chambers also joined landmark buildings and households across the UK in an hour-long Lights Out event on Monday night.
The commemorations follow Glasgow’s World War One project, collecting stories of those who took part in the war effort, either on the front line or at home — visit First World War Glasgow to find out more.
As reported in last week’s Extra, councillor Ian McAlpine has issued a call for stories of wartime involving East Renfrewshire residents — for more info, contact [email protected]
And paying tribute over in East Kilbride were the Nicol family, from Clarkston — some of the first visitors to a new sculpture in honour of those lost during WW1.
The shopping centre is the only location in Scotland to host one of the sculptures, by artist Mark Humphrey, which can hold over 3,000 poppies, in aid of Poppyscotland.