The Africans started brightly, but soon lost their discipline, which cost them a goal and a man in the first half. The ever-energetic Olivier Boumale had the game's first chance when his left-footed free-kick was heading towards the target, but Sebastian Mielitz, deputising for Ron Robert Zielder, did well to turn the ball around the post.
Germany, adapting to a 4-4-2 formation instead of their usual 4-1-4-1, and without suspended coach Hrubesch in the dug out, lacked a bit of assurance in the opening stages, but quickly found their feet.
They had a good chance to take the lead in the 14th minute when Semih Aydilek tried to lift the ball over the onrushing Francois Beyokol, but his effort went just over the bar. And as Germany's dominance increased, so did the frustrations of Cameroon's coach Alain Wabo, who cut an antagonised and animated figure on the touchline.
His fears had substance, however, and were realised when the Europeans took the lead four minutes before the interval. A superbly floated free-kick from Mario Vrancic was delivered at the far post, where no fewer than three German players were waiting unmarked. Sukuta-Pasu got his head on the end of it for his second in as many games. Things got worse for Cameroon just before half-time, when Patrick Ekeng received his second yellow card of the match from referee Yuichi Nishimura.
Only some superb goalkeeping from Beyokol stopped the Germans from making it 2-0 in the 53rd minute. He pulled off a fine stop to keep out Lewis Holtby's curling effort and then made an instinctive double save to deny Sukuta-Pasu from close range. The striker did everything right by getting both efforts on target, but found the Young Lions skipper in imperious form.
Beyokol was powerless to stop Germany's second five minutes later, when Cameroon failed to defend a high ball into the box, which Manuel Schaeffler was able to control without any pressure and set up Aydilek for the simplest of finishes.
Cameroon visibly wilted thereafter and it seemed only a matter of time before Germany added a shirt third. Sure enough, the Africans' offside trap failed once again and this time it cost them dearly. Substitute Tobias Kempe played the ball to Sukuta-Pasu on the edge of the 'D' and he was fortunate to see his mis-hit shot fall into the path of Holtby, who fired home with 20 minutes remaining.
Parity was restored on the field, in terms of numbers when Aydilek was dismissed for a second yellow card. The Kayserispor midfielder would have missed the Germans' Round of 16 game for his earlier caution, but the red made him miss an additional 16 minutes of this match.
Although Cameroon enjoyed more possession after the sending off and went close through Germain Kiko and Enow Tabot, Germany's defence remained resolute to ensure they topped Group C and return to Suez to face a third place team from groups A,B or F. Meanwhile, due to Korea Republic's 3-0 win over USA, the Young Lions - who showed so much promise in their opener against the South Koreans - now head for home.