CTC Inveraray

During World War II, the No. 1 Combined Operations Training Centre (CTC) at Inveraray—also known as HMS Quebec—served as Britain’s premier amphibious warfare school, preparing troops for operations like D‑Day. Here's a deep dive into the training and life at CTC Inveraray:

Establishment & Scope

Opened October 1940 on Loch Fyne’s banks, under War Office control
Trained around 250,000 British and Allied personnel—up to 15,000 at a time—instructors, support staff included
All services participated: Army engineers (amphibious landings), Royal Navy crews for minor craft, RAF officers coordinating air support via No. 516 Squadron

Amphibious & Landing Craft Training

Specialized in “minor” landing craft (e.g., LCAs)—distinct from “major” craft trained at CTC Castle Toward c
Styles of training:
- Embarking/disembarking under simulated enemy fire.
- Mass beach assaults on a 2‑mile stretch near Strathlachlan, Loch Fyne
- Combined Army‑Navy‑Airfire drills: landing craft crew operations, beach signals, tank and vehicle landings even in poor weather
Notably, in Dec‑Mar 1941–43, Canadian brigades practiced "wet and miserable" amphibious ops alongside RAF and Royal Engineers

Unit Types Trained

According to National Archives (DEFE2/1317), CTC trained:

PeriodUnits

Oct 19403,4,6,8 Commandos

Nov 19407 Commando

May 19411,2,3,9,12 Commandos

Apr–Aug 19421, 3202–4, 3205–8 RAF Servicing Commandos

Sept 1942British 2 Commando etc., US 168,26 Regiments

19435 RAF Commando; 3209–10

Jun 1944Norwegian Independent companies & para brigades

Additionally, by D‑Day, 130 battalions—including Canadian (29) and US (6)—had passed through Inveraray

Special Conditions & Exercises

Harsh training terrain: Loch activities in biting cold; some casualties occurred when assaulting in the loch at night
Deception drills: Senior officers participated in mock amphibious ops to deceive German intelligence pre–June 1944
Diverse environments: In 1945, palmtrees/bamboo were planted and Royal Marines taught jungle bridging, sniping, booby‑traps—prepping for Pacific/SE Asia

Facilities & Local Impact

Inveraray town and estate requisitioned—castle grounds turned into cinema, decontamination units, Nissen huts in camps like Kilbride and Chamois .
Support infrastructure included naval base HMS Quebec (later caravan park), accommodation ships like HMS Ettrick and Ettrick-related camps .
At its height, the campus included seven sub-camps and multiple naval/sea platforms for training .
Locals recall castle grounds transformed by tents, crowding up to 15,000 servicemen and full-scale invasion scenario drills in the town .