A fairly good series with excellent CGIs and interpolated maps and newsreel footage. Elderly participants from both sides add personal impressions.
Of course the narrative in a short film about a great battle can't cover every detail. On the whole, the narration is honest, giving credit where it's due. At the beginning of the tank battles in North Africa, the German Afrika Korps under Erwin Rommel was outnumbered but had better equipment and a daring and successful leader.
The engagements preceding El Alamein went back and forth across North Africa. After a successful long-distance drive across the desert, the narration describes the aggressor as "worn down." What he means is that their supply lines were stretched too thin. The British were being supplied through Egypt in the east, the Germans through the port of Tripoli farther west. With each advance, the source of supplies grew more distant. In addition, the British had cracked the Italian naval code and knew when and where Rommel's supplies would be shipped from Italy to Tripoli. Fewer of the ships were able to complete the journey. The Germans were at a great disadvantage.
There is no sense in underestimating the importance of logistics. Rommel's supplies and replacements had to make a thousand-mile journey across the sea, then another 1500 miles across open roads in the desert, constantly subject to air attacks. Damaged tanks could be cannibalized but not replaced. Just as important, fuel and water were disappearing. By the time of El Alamein, at the end of a stunning advance, Rommel had only a handful of operational tanks and was draining the fuel from some in order to keep others running. Of course, as he was driven back from El Alamein towards Tripoli, his supply problems eased but didn't disappear. Eventually, everything else did.
The fighting would continue with mixed results and an inevitable end.