When the British Army is transferred to the EU Army (any honest person knows this day is coming) then we won't be able to. It'll be up to Jean-Claude Juncker's successor to decide if the Falklands are worth re-capturing, or if an intervention in Sierra Leone is viable.
This scaremongering nonsense again.
Do you really think any British Prime Minister is going to sign over control of the UK armed forces to the EU? The idea is utterly ridiculous.
I expect we will co-operate further with the other EU nations on defence, quite possibly we'll contribute some small part of our forces to a "European army" - doing so makes a lot of sense when so much of our military action is co-ordinated with our EU allies - but the idea that we would place our entire forces under EU control? It's just scaremongering gibberish.