Fifty shades: Why are Royal Navy ships painted grey?
Whether it is an aircraft carrier or support ship, all Royal Navy ships are painted grey.
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Army Ranger Regiment: What we know about Army's new elite force
The regiment will be part of a new Special Operations Brigade, with hopes it will be deployable from next year.
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Sea vessels Type 83 destroyer: What we know so far
The Type 83 has been listed as part of a UK shipbuilding overhaul and could begin to replace the Type 45s in the late 2030s.
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Navy Watch: Admiral Sir Ben Key – who's the new First Sea Lord?
The senior Royal Navy officer has succeeded Admiral Sir Tony Radakin in the role.
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Northern Ireland Watch: What is the Good Friday Agreement and why does it matter?
The political commitment from the UK and Irish governments to bring an end to the Troubles in Northern Ireland was agreed in 1998.
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Naval History What is Trafalgar Day?
It marks the Royal Navy's victory over the French and Spanish fleets in the Battle of Trafalgar more than 200 years ago.
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USA Secret weapon or psychological illness: What is Havana Syndrome?
First reported in Cuba five years ago, the illness has links to Cold War Russia and some believe it is the result of a sonic weapon.
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Navy Crossing the Line explained: Centuries-old Navy tradition to gain acceptance of 'King Neptune'
It's a traditional rite of passage and has become key in developing a sense of community among the ship's company.
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Army Know your Army: What military ranks are equivalent to 'private'?
Private is the lowest rank of trained soldiers in the British Army, although there are a number of equivalent ranks.
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UK Watch: Admiral Sir Tony Radakin - Who's The UK's New Chief Of Defence Staff?
He will become the first British military chief to come from the Royal Navy since Admiral Sir Michael Boyce in 2001.
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RAF Watch: Why does the military burn pianos?
The unusual tradition is believed to originated as a way for personnel to honour fallen pilots.
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UK AUKUS: Why's Australia getting nuclear-powered subs?
The UK, US and Australia have agreed a new defence pact which will see the three countries work closely together and share technology.
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Aircraft What is the Typhoon aircraft?
From 2035, the Typhoon is set to be replaced by the RAF's next generation combat aircraft, the Tempest.
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Feature ISIS-K, Islamic State, the Taliban and Al-Qaeda: How are they different?
So-called Islamic State, the Taliban, and al-Qaeda are all radical jihadist groups, but they are not all the same.
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History Was this the shortest ever war in military history?
The conflict is thought to have lasted as little as 38 minutes or as long as 45...
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Afghanistan Watch: Who Are ISIS-K?
President Joe Biden said this week the US knew the group was "seeking to target" Kabul airport and attack allied forces and civilians.