On June 16, 1958, William Hawi was in charge of organizing and leading the activists during the Lebanese events; this constituted the hub of the Party's Regulatory Forces.

On January 23, 1961, the Political Bureau dissolved the militants' organization before including its members in the Lebanese Phalange Party and Hawi created the Regulatory Forces.

Moreover, "Chef" William (which means "leader" in French), supervised the setting up of camps as well as the training organization and development, which enabled the progress of the regulatory process.

In 1975, Hawi was leading operations against the Palestinians fighting in Lebanon at the Souks of Beirut, Karantina, Jisr el Basha, Dekwaneh, Galerie Semaan and what is known as the "Battle of the Hotels".

On July 1, 1976, sources of the Kataeb Party announced the fall of the last bastion in Tel el-Zaatar and declared that the Head of the Phalange War Council supervised this operation.

William Hawi accepted Pierre Gemayel's invitation and joined the Phalange Organization in 1937 even when it was working secretly and illegally following a decree ordering its dissolution on November 18, 1938.

On January 23, 1961, the Political Bureau dissolved the militants' organization before including its members in the Lebanese Phalange Party and Hawi created the Kataeb Regulatory Forces.

[22] In 1952, the Lebanese Phalange put William Hawi up for the Beirut Municipal Council in the Achrafieh-Rmeil region for the Eastern Orthodox Christian seat, where he obtained the largest number of votes.

[27] The Political Bureau held an extraordinary meeting on March 31, 1970, and created a "Higher Council" in charge of supervising the organization of the Party's work relating to its security and that of the country.

The state being unable to fulfill its duties and defend its people, and the governmental institutions being disabled, it was necessary to unify and organize the ranks of the parties for defense purposes.

Perhaps the most terrible ordeal he had to face was the infamous massacre on December 6, 1975, that was later called the "Black Saturday", in which Phalangist gunmen killed hundreds of Palestinians and Druze civilians.

William Hawi engaged in a fight against corruption and in a battle for liberation when the Palestinians tried to control Beirut completely by isolating it with their surrounding military camps.

The Quarantine camp fell within 24 hours under the attack orchestrated by William Hawi, which opened the road linking Beirut to Kesserouan and Byblos in December 1976.

On July 11, 1976, the sources of the Lebanese allied forces announced the fall of the last bastion in Tell el Zaatar and declared that the Head of the Phalange War Council supervised this operation.