San Francisco International Airport (SFO) FAA Status: Advisory Due to RWY-TAXI / CONSTRUCTION, there is a Traffic Management Program in effect for traffic arriving San Francisco International Airport, San Francisco, CA (SFO). This is causing some arriving flights to be delayed an average of 47 minutes.
I'm fairly sure that I could get over a thousand wars in Europe in the last Millennia or so. So I'd say that there have probably been between 10,000 and 250,000 wars in human history. I'd expect a log distribution with very few wars with more than 100 million participants and a great many with fewer than a thousand.
The Allied powers before 1917 are sometimes referred to as the Triple Entente, and the Central Powers are sometimes referred to as the Triple Alliance. About 8,500,000 soldiers were killed in World War 1, from all nations. The total with civilians is over 20,000,000.