The battalion's lineage from this point forward is complicated, with many changes in organizational structure and nomenclature occurring from pre-WWI and the eventual move from a horse-based military to the modern mechanized force of today.

Additionally the Battalion has a long history of participation on United Nations mission including UNEF II, UNDOF, UNFICYP, UNIFIL, UNTAG, UNPROFOR, and UNMISS.

In 1987 on successive weekends (27 September and 3 October) 26 Service Battalion was awarded the Freedom of the City in Sault Ste Marie and North Bay respectively.

Following amalgamation in 2010, 33 Service Battalion exercised its right to march the streets of Ottawa for the first time as a formed body consisting of members of the unit from all three geographic locations.

Commanding officers: Regimental Sergeants Major: Since the inception of 33 Service Battalion in 2010 there has been a large emphasis placed on sport and fitness.

Erin Carter winning the women's category of the 2018 2 CMBG Iron Warrior (Day 1 edition), and Lt. Steven Jackson finished second place in the 6633 Arctic Ultra race in February 2020.

The official colours of the unit flag are Oriental blue (top) and marine corps scarlet (bottom) with an intervening gold stripe.

This flag was designed by Chief Warrant Officer Phil Raven during his time as Regimental Sergeant Major of 2 Service Battalion in the 1970s.