Shadow Defence Secretary Jim Murphy told Mr Hammond in the Commons:
There is an arc of instability from West African states to Central and Southeast Asia. Non-state actors are on the rise, climate and population change are new sources of tension.
The United States is pivoting towards the pacific while the European end of NATO will take greater strain.
In that context, Mr Speaker, a statement which outlines plans to deliver the smallest Army since the Boer war is an entirely inadequate response.
Defence Secretary Philip Hammond has announced plans that will see the Army lose 17 units in cuts
By 2020, troop numbers are to fall by a fifth to 82,000, which will result in the axing of some of Britain's most historic battalions.