Brothers In Arms explores the relationship between Del and Rodney Trotter, which is at the heart of each of the 64 episodes. The on-screen chemistry and off-screen relationship of two of the greatest comedy actors of the last fifty years was pivotal for the show, and a key factor in how Only Fools quickly developed from being a modest sitcom to becoming the jewel in the BBC's crown. This episode also features a rare Christmas sketch the cast performed, which hasn't been broadcast in over 28 years.