Short Answer 
The February Revolution in Russia began in 1917 due to food scarcity, leading to riots and protests, especially on March 8. Soldiers in Petrograd, instead of suppressing the unrest, joined the protests, which were fueled by discontent with the government’s handling of World War I and its inability to equip the military effectively.
Step 1: Understanding the February Revolution
The February Revolution commenced in 1917, primarily fueled by a critical scarcity of food. This shortage led to widespread riots and strikes in Petrograd, now known as St. Petersburg. The situation escalated on March 8, 1917, when significant protests erupted, highlighting the desperate conditions faced by the population.
Step 2: Participation of Soldiers
During this period, many Russian soldiers, who were actively engaged in World War I, remained stationed in Petrograd. Instead of quelling the riots, these soldiers responded to the public unrest. Their involvement was crucial as they joined in the protests, reflecting a growing discontent with the government’s handling of the war and the country’s overall condition.
Step 3: Impact of the War on the Revolution
The ongoing participation of Russia in World War I played a significant role in the February Revolution. The Russians felt that their military was ill-equipped to face the might of industrialized Germany. This realization not only intensified public dissatisfaction but also rallied more people to support the calls for change as they believed the government was not adequately addressing the nation’s challenges.