Van Moer was a regular for the
Belgium national team, appearing in the
1970 FIFA World Cup and scoring twice in a 3–0 defeat of
El Salvador, Belgium's only win in the tournament. Two years later, he played a key role in helping his country qualify for the semi-finals of the
UEFA Euro 1972. After Belgium had defended stubbornly in a goalless quarter final, first leg in Italy, he scored the opening goal midway through the first half in the return at
Anderlecht's
Constant Vanden Stock Stadium. But then something was to happen, putting the Belgian's career on hold. On the stroke of half-time,
Mario Bertini's lunge resulted in a broken leg for Van Moer, a bitter-sweet day for the home nation who ultimately celebrated a 2–1 victory. Although he recovered, the leg-break and other injuries restricted his international appearances over the next three seasons. By October 1979, aged 34, without an appearance for The Red Devils for four and a half years, international football couldn't have been further from his thoughts. But wily Belgian coach
Guy Thys had other ideas. Van Moer was an inspired choice for a Belgian side who had forgotten how to win, as they prepared to take on
Portugal in a 'do or die' EC qualifier. Van Moer again came up trumps with the first goal in a 2–0 win. Van Moer also performed key roles in home and away victories over
Scotland, which propelled Belgium to qualification for the Finals tournament in
Italy. Striker
Horst Hrubesch may have scored two goals to secure final victory for
West Germany, but for many the outstanding player of the tournament was the Belgian central midfielder with the seemingly boundless energy. He ran the show in most every game he played, scheming, prompting and holding the ball, never wasteful his performances were as dynamic as they were inspirational as Belgium went all the way to their only major Final. Van Moer was arguably the most influential player in the tournament and indeed at 35, his performances earned him fourth place (equalling the best ever showing by a Belgian) in the
Ballon d'Or poll.
Karl-Heinz Rummenigge,
Bernd Schuster and
Michel Platini finished ahead of him. Van Moer's international career went on for another two years, long enough to appear in another World Cup Finals series. Named captain in the absence of
Eric Gerets, for the second-phase game against
Poland his international career ended when replaced by
François Van der Elst at half-time. Belgium trailed by two at the interval and went on to lose 3–0, Poland's inspiration coming from
Zbigniew Boniek who was the only player to score. ==Managerial career==