Lou was born in Quebec in 1933 and gained his education there before joining the RCAF in 1951.  He was trained as an Electrical Technician at Camp Borden and then served with 439 Squadron both at Uplands, ON and in the UK at North Luffenham.  On return to Canada, he served with 412 Squadron before moving to Vancouver to serve first with 443 Squadron, then with Station Vancouver followed by a tour at RCAF Station Comox.  He was promoted to Sergeant in 1966 on transfer to RCAF Station Greenwood where his technical expertise focused on the CP-107 Argus aircraft.

In 1972, Lou led the servicing crew attached to the 404 Squadron ASW Competition crew challenging for the O’Brien Trophy.  The servicing crew competed for the Morrow Trophy awarded to the best servicing crew amongst the four competing squadrons; 404, 405, 407 and 415.  The competition took place from Canadian Forces Base Summerside, PEI.  Crew 1 of 404 Squadron won the O’Brien Trophy and Sergeant Toth and his servicing crew were awarded the Morrow Trophy by Admiral Timbrell, Commander of Maritime Command.

Traditionally the O’Brien Competition winner represents Canada in the Fincastle Competition; an annual competition between the Air Forces of the old Commonwealth countries Australia, Canada, New Zealand and the UK.  Argus 10730 with aircrew and servicing crew aboard departed Greenwood on 2 September, 1972 with enroute stops at Comox, Midway Island, Guam and on to Singapore and RAF Station Tengah where the competition was held.  Canada did not win the coveted Fincastle Trophy, but the aircraft performed flawlessly throughout the competition under Sergeant Toth’s care.  On departure day for Canada, an engine failed on take-off requiring an engine change.  Awaiting a new engine and diplomatic clearance difficulties delayed the return to Greenwood until 5 November.  Again, the aircraft performed flawlessly due to Sergeant Toth’s leadership.

In 1972, Lou left Greenwood to serve at the air technicians training school at Camp Borden, then at the Canadian Forces Leadership Academy.  His last posting was to the Maintenance Staff at National Defence Headquarters.  He reached Chief Warrant Officer rank level as a fitting result of his technical professionalism and his outstanding leadership qualities.  Lou died in August 2001.