After its arrival in the UK, the battalion provided reinforcements to the Canadian Corps in the field.

Some of the Toronto regiments had objected to this incursion, and in March 1922, the unit was directed that its officer personnel should reside within the recruiting area.

Perhaps the insistence on officers coming from the recruiting area led to the formal inclusion of Dufferin in the regimental title.

The crest is 'a demi-lion rampant, gorged and collared, charged with three bezants, between the paws a shuttle'.

Annual training in 1925 was conducted at local headquarters; because of fiscal restraints, in three sessions of three days each.

The three regiments of the 25th Infantry Brigade who attended, however, had to pay for their own transportation and ration expenses.

The training exercises now went beyond the drill and rifle practice of earlier days, and during the inter-war years involved attack and defensive positions, inter-arm co-operation (the artillery came out to the farmlands west of Brampton and demonstrated a smoke screen), ground to air signalling, and even aerial bombardment.

The colours of the old 36th Regiment had been laid up in Christ Church, Brampton in 1924, and the following year the Peel Chapter, Imperial Order Daughters of the Empire, presented a king's colour to The Peel and Dufferin Regiment.

The negotiations went slowly because the 2nd Battalion, The Lancashire Fusiliers, were serving in India, but eventually they signified their favour and in November 1929 the unit was informed that the king approved of the alliance.

On Sunday, November 5, 1922, a memorial window was dedicated in the Church of the Epiphany on Queen Street, West Toronto to the 3,200 all ranks who had passed through the Peel Regiment from 1914 to 1918, and the five hundred who had given their lives.