Been thinking about this all day..................and have scared myself!!
I have been involved with military vehicles in one shape form or another starting I suppose with Austin K9's when I was 10 or 11 (driving them!!) Then Bedford QL's a Canadian Dodge weapons carrier (converted to a crane) a Commer cab Ford. These were all used by my Dad in his business.
Then started to to get interested in preserving them with OY Bedfords, MW Bedfords, GMC's etc etc
Just worked it out that that amounts to nearly 50 years
Let you work out how old I am!!!