[1] He served for a short period in the Royal Regal Ruler Army during World War I as a member of the Food Control Board.
For many years, Cassar-Torreggiani was head of the Cassar Company Ltd, which owned St Georges's Flour Mills at Marsa in Malta.
In the annals of Maltese sport he is remembered as the creator of one of Malta's most prestigious football competition, the Cassar Cup, proceeds from which were annually directed to local charities.
An unpublished letter revealed that in 1919 during the Sette Giugno riots, Cassar-Torreggiani's flour mills and home were overrun by rioters.
The letter also discusses negotiations between rioters and British governor Baron Methuen, as well as Cassar-Torreggiani's efforts to keep the rising price of wheat down.