Malone's 44 Goal Season
Mar 2 Joe Malone goes scoreless in Montreal Canadiens' 5-3 season-ending loss to Toronto Arenas; finishes the first NHL season with 44 goals, a record that stands until 1944-45
The 1918 Flu Pandemic
Mar 4 US Army mess cook Private Albert Gitchell of Fort Riley, Kansas becomes the first documented military case of Spanish flu; start of worldwide pandemic killing 50-100 million [some sources cite date as March 11]
Distinguished Service Medal
Mar 7 President Woodrow Wilson authorizes US Army's Distinguished Service Medal
- Mar 7 World War I: Finland forms an alliance with Germany
- Mar 9 Russian Bolshevik Party becomes the Communist Party
- Mar 9 Ukrainian mobs massacre Jews of Seredino Buda
- Mar 9 Wageningen Agricultural College Netherlands opens
- Mar 11 Conservationists John Merriam, Madison Grant, and Henry Fairfield Osborn found "Save the Redwoods League" - a non-profit forest conservation land trust in San Francisco, California founded
Moscow Soviet Capital
Mar 12 Fearing foreign invasion Vladimir Lenin shifts revolutionary Russia's capital from Petrograd (St. Petersburg) to Moscow
- Mar 13 1st NHL championship: Toronto Arenas beat Montreal Canadiens, outscoring them 10-7 in a 2 game set
- Mar 13 American Red Magen David (Jewish Red Cross) forms
Trotsky Controls Army
Mar 13 Leon Trotsky gains control of the Red Army
Niles US Champion
Mar 17 US Men's Figure Skating championship won by Nathaniel Niles
- Mar 18 Soccer team SON OF Meerssen forms
- Mar 18 Socialist Youth AJC organizes in Amsterdam
- Mar 19 S Potter becomes 1st US pilot to shoot down a German seaplane
- Mar 19 US adopts Standard Time Act of 1918, also known as the Calder Act, a federal law implementing standard time (and daylight saving time) and defining five time zones for the United States
- Mar 21 World War I: Germany launches Somme offensive
- Mar 23 Alick Wickham dives 200' into Australia's Yarra River
- Mar 23 German forces advance 14 miles to the Somme River (WW1)
- Mar 23 Germany begins using long-range gun, the 'Kaiser Wilhelm Geschütz' ('Emperor William Gun'), aka 'Paris Gun' to shell Paris from Crépy-en-Laonnais, 75 miles away; over several days, 303 rounds kill 256 and wound over 600
- Mar 23 Lithuania proclaims independence
- Mar 25 Belarusian People's Republic is established
- Mar 27 Moldova and Bessarabia join Romania
- Mar 30 Stanley Cup, Mutual Street Arena, Toronto, ON: Toronto Arenas (NHL) beat Vancouver Millionaires (PCHA), 2-1 for a 3-2 series victory; first series contested by the new NHL
- Mar 31 1st daylight savings time in US goes into effect