Short answers, pulled from the story.
Jacobo Árbenz entered the Polytechnic School of Guatemala as a cadet in 1932 at age twenty. He graduated from this institution in 1935 after earning the title of first sergeant, which only six people received between 1924 and 1944.
Jacobo Árbenz led a group of soldiers and students that attacked the National Palace on the 19th of October 1944 to overthrow dictator Jorge Ubico. This event known as the October Revolution resulted in the surrender of General Federico Ponce Vaides by the 20th of October 1944.
Decree 900 passed through the National Assembly on the 17th of June 1952 and expropriated uncultivated land from large landowners for redistribution to laborers. By June 1954, 1.4 million acres had been distributed to approximately 500,000 individuals representing one-sixth of the population.
The CIA operation code-named Operation PBSuccess received authorization from President Dwight D. Eisenhower in August 1953 to overthrow the Guatemalan government due to United Fruit Company lobbying. Jacobo Árbenz left the presidential palace at eight pm on the 27th of June 1954 after being advised that the army would likely strike a deal with invading forces led by Carlos Castillo Armas.
The Guatemalan government signed an agreement with surviving family members in May 2011 to restore the legacy of Jacobo Árbenz and publicly apologize for its role in the 1954 coup. A formal apology was made at the National Palace by President Alvaro Colom on the 20th of October 2011 to Jacobo Árbenz Vilanova son of the former president.