The War Games saw two milestones for Doctor Who. The first is that it's the longest Doctor Who story to date (unless you count Trial Of A Time Lord as one story) told in a whopping 10 episodes. The second is that it's the first mention of the name of the Doctor's species and their first appearance onscreen as the Time Lords (a Time Lord had been seen in The Time Meddler as the Meddling Monk but he was never referred to as such).

What makes this serial remarkable however is that over 10 episodes the story never drags. The War Games sees the Doctor taking on the War Chief (Edward Brayshaw), who has taken many historical armies including the Romans and World War 1 fighters out of time and thrown them into simulated versions of the wars they fought. This story feels like it's at exactly the right length and is a suitably epic finale for Patrick Troughton's Doctor. It's a story that echoes elements of the Moffat Era with all these various armies from Earth's history together. You could easily imagine Steven Moffat doing this.

The War Chief is also a great villain superbly played by Edward Brayshaw. It's a shame he never returned to the series as he is brilliant and could easily have become an iconic character to rival the Master. There is even a popular fan theory that he is a past incarnation of the Master and this would make a lot of sense as he shares a lot of the same qualities.

What makes this serial a true classic however are the last two episodes with the Time Lords. There is really no surprise that the Time Lords became such a recognisable alien species from the show. There's a nice element of ambiguity about them that directly mirrors the Doctor's own and you never quite where their moral compass with fall. This is more evident with new series Time Lords but it is arguably still noticeable here given their non-interference policy perhaps leading to the Earth undefended by the Doctor if they didn't decide to let him protect at least Earth. You could easily see the Time Lords allowing Earth to be invaded by the Autons and Nestene Consciousness but equally they interfered with the War Chief's plans. That's what's great about the Time Lords: you never know if they are allies or enemies.

Of course, you can't do a review of any regeneration story without mentioning the Doctor bowing out. Patrick Troughton is absolutely amazing here as his Doctor and is extremely believable at portraying his incarnation in a position where for once the evil cannot be 'fought' with him and his companions alone. You truly believe this is a desperate time for the Doctor where he has no other option but to call in his own people and his speech about his so-called 'interference' to the Time Lords is heartwarming and echoes an earlier one from The Moonbase. This is arguably among the strongest acting and writing the classic series ever saw.

Overall, the War Games is an epic 200 minute regeneration story for the 2nd Doctor and one that was a giant milestone for the show.