On the 12th of March 1968, when it became independent.
they join the commonwealth of nations in 1962
If Mauritius is part of the commonwealth
India joined the Commonwealth of Nations on 15 August, 1947.
Malaysia joins the Commonwealth of Nations in August, 1957.
Namibia gained its independence from South Africa and joined the Commonwealth of Nations on the 21st of March 1990.
1981 (not sure of the date)
Cameroon was admitted as a member of the Commonwealth of Nations on November 13, 1995.
because moldy cheese!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Mauritius is a republic but a member of the Commonwealth.
The Commonwealth of Nations is a voluntary organization that has over 53 members. Nigeria became a member of the Commonwealth on October 1, 1960.
The British Armed Forces accept citizens of all Commonwealth nations (whether a Dominion, or just in the Commonwealth of Nations), as well as citizens of nations who may no longer be in the Commonwealth, but were at the time of the individual's birth (for example, a citizen of Zimbabwe could join the Royal Army so long as they were born prior to Zimbabwe's withdrawal from the Commonwealth of Nations). So, your short answer would be yes.
The last Commonwealth Dominion established was Saint Kitts and Nevis in 1983. The most recent addition to the Commonwealth of Nations was Rwanda, who joined towards the end of November 2009.