Appointments to the Order of the British Empire were at first made on the nomination of the self-governing Dominions of the Empire, the Viceroy of India, and the colonial governors, as well as on nominations from within the United Kingdom. As the Empire evolved into the Commonwealth, nominations continued to come from the Commonwealth realms, in which the monarch remained head of state. These overseas nominations have been discontinued in realms that have established their own Orders—such as the Order of Australia, the Order of Canada, and the New Zealand Order of Merit—but members of the Order are still appointed in the British Overseas Territories. 

Any individual made a member of the Order for gallantry could wear an emblem of two crossed silver oak leaves on the same riband, ribbon or bow as the badge. It could not be awarded posthumously and was effectively replaced in 1974 with the Queen's Gallantry Medal. If recipients of the Order of the British Empire for Gallantry received promotion within the Order, whether for gallantry or otherwise, they continued to wear also the insignia of the lower grade with the oak leaves. However, they only used the post-nominal letters of the higher grade.
What did the Empire change to?
What were appointments based on?
Can the United Kingdom make nominations?
What were the appointments for?
Who was in charge of some states?
Which areas was that?
Did the Viceroy make nominations?
Where is he from?
How many leaves were on the emblem?
People belonging to what could wear that?
Could you become a member after death?
What replaced it?
When?
What happened to overseas nominations in areas with their own orders?
Could the still be appointed in the British areas?
What was the name of New Zealands group?
Did Canada have their own?
What about Australia?
What about China?
What could you get a promotion for?
the Commonwealth
 As the Empire evolved into the Commonwealth,
The nomination of the self-governing Dominions of the Empire
the nomination of the self-governing Dominions of the Empire
Yes
as well as on nominations from within the United Kingdom
Order of the British Empire
Appointments to the Order of the British Empire 
the monarch
in which the monarch remained head of state. 
Overseas
, in which the monarch remained head of state. These overseas nominations
yes
first made on the nomination of the self-governing Dominions of the Empire, the Viceroy of India
India
Viceroy of India,
Two
 two crossed silver oak leaves on the same riband
The Order for gallantry
Any individual made a member of the Order for gallantry
No
. It could not be awarded posthumously and
The Queen's Gallantry Medal
It could not be awarded posthumously and was effectively replaced in 1974 with the Queen's Gallantry Medal.
1974
It could not be awarded posthumously and was effectively replaced in 1974 with the Queen's Gallantry Medal. 
They were discontinued
These overseas nominations have been discontinued in
Yes
—but members of the Order are still appointed in the British Overseas Territories. 
Order of Merit
New Zealand Order of Merit
yes
, the Order of Canada,
Yes, they did too
e Order of Australia, 
No
te. These overseas nominations have been discontinued in realms that have established their own Orders—such as the Order of Australia, the Order of Canada, and the New Zealand Order of Merit—but members of the Order are still appointed in the British Overseas Territories. 

For gallantry or otherwise
whether for gallantry or otherwise,