The latest call-up by Vanguard was in the weeks leading up to the mid-April income tax deadline when volume reached 50,000 to 60,000 calls a day.
He hasn't made any official appearances since and was last called up to the squad in February 2012 as a late call-up for a training camp held in Spain.
"And Dave McIvor, who was a late call-up, could also be just the kind of back row forward we need."
Sebastien Viars has won a late call-up for next month's French rugby tour of Canada and New Zealand.
During the 2003 England tour he received a late call-up to the squad and impressed with 16 wickets in the Test series.
Macartney was thus given a late call-up.
The latest call-up of reserve forces followed a prolonged mobilization after the attacks on New York and Washington on Sept. 11, 2001.
Marshall was a late call-up for the 2007 Cricket World Cup, in which he scored one half-century.
His latest international call-up was for the 2008 African Cup of Nations qualifier against Madagascar, where he started the match on the left wing.
His form meant that he received a late call-up to the England national football team for a friendly against Mexico, but he never actually won an international cap.