After promotion to lieutenant in 1905, he was assigned to the 3rd Fortress Artillery Regiment, subsequently attending the Application School in Turin, obtaining the highest score achieved until then in the final exam.

[1][3][2] In November 1939 Baldassarre was given command of the 132nd Armoured Division Ariete, which he still held at the time of Italy's entrance into World War II, on June 10, 1940.

In the spring of 1941, following the destruction of the Tenth Army in Operation Compass, the division was transferred to North Africa and participated in the reconquest of Cyrenaica alongside the Afrika Korps, for which Baldassarre was awarded the Officer's Cross of the Military Order of Savoy.

Piacenza, Raffaelli and Erculiani were killed in the attack, and the mortally wounded Baldassarre was carried to the nearby field hospital of the "Ariete" Division.

After summoning General Giuseppe De Stefanis to his bedside and handing him over the command of the XX Corps, Baldassarre died of his wounds at 14:00 on 26 June.