[4] Called up to the England team days before his 30th birthday, Charlton went on to score six goals in 35 international games and to appear in two World Cups and one European Championship.

He played in the World Cup final victory over West Germany in 1966 and helped England finish third in Euro 1968 and win four British Home Championship tournaments.

Born into a footballing family in Ashington, Northumberland, on 8 May 1935,[5] Charlton was initially overshadowed by his younger brother Bobby, who was taken on by Manchester United while Jack was doing his national service with the Household Cavalry.

[25] Leeds finished just five points above the Second Division relegation zone in the 1960–61 season, and Taylor resigned; his replacement, Don Revie, was promoted from the United first team, and initially he was not fond of Charlton.

[26] He became frustrated and difficult to manage, feeling in limbo playing for a club seemingly going nowhere whilst his younger brother was enjoying great success at Manchester United.

[32] Leeds needed a win in their final game of the season to secure the title but could only manage a 3–3 draw with Birmingham City at St Andrew's – Charlton scored the equalising goal on 86 minutes.

They made progress in the Inter-Cities Fairs Cup, beating DWS (Netherlands), Valencia, Bologna (Italy) and Kilmarnock (Scotland) to reach the final, where they were beaten 2–0 on aggregate by Yugoslavian outfit Dinamo Zagreb.

[40] Charlton developed a new ploy for the 1967–68 season by standing next to the goalkeeper during corners to prevent him from coming out to collect the ball; this created havoc for opposition defences and is still a frequently used tactic in the modern era.

They secured the title with a goalless draw at Anfield on 28 April, and Charlton later recalled the Liverpool supporters affectionately called him "big dirty giraffe", and that manager Bill Shankly went into the Leeds dressing room after the match to tell them they were "worthy champions".

[48] Charlton caused controversy early in the 1970–71 season as in an October appearance on the Tyne Tees football programme, he said he'd once had a "little black book" of names of players whom he intended to hurt or exact some form of revenge upon during his playing days.

[53] In the last ever season of the Inter-Cities Fairs Cup they beat Sarpsborg FK (Norway), Dynamo Dresden (Germany), Sparta Prague (Czechoslovakia), Vitória (Portugal) and Liverpool to secure a place in the final against Italian club Juventus.

[62] The defence remained relatively constant in the build up to the 1966 FIFA World Cup: Gordon Banks (goalkeeper), Ray Wilson (left-back), Charlton and Moore (centre-backs), and George Cohen (right-back).

[65] England opened the year of 1966 on 5 January with a 1–1 draw with Poland at Goodison Park; Ramsey's managerial ability was demonstrated during the game as the equalising goal came from Bobby Moore, who was allowed to surge forward as Charlton covered the gap he left behind in defence.

[74] After the World Cup England lost the annual Home Championship to Scotland after a 3–2 defeat in April 1967, Charlton scored for the second successive international game running after also finding the net against Wales the previous November.

[78] He took a salary of £10,000 a year despite the chairman being willing to pay a lot more; his only stipulations were a gentleman's agreement that he would not be sacked, assurances that he would have no interference from the board in team affairs, and three days off a week for fishing and shooting.

[90] Middlesbrough finished the 1976–77 campaign in 12th place, and Charlton left the club at the end of the season on the belief that four years was an optimum time with one group of players and that he had reached his peak with them – he later regretted his decision.

[93] He took the "Owls" to mid-table safety with a 14th-place finish in the 1977–78 season, though they did suffer embarrassment by being knocked out of the FA Cup by Northern Premier League side Wigan Athletic.

[101] The club had a limited squad, and successful cup runs took their toll, as did injuries to McCulloch and Brian Hornsby as they drifted down to sixth place by the close of the season.

[101] They reached the semi-finals of the FA Cup, losing 2–1 to Brighton & Hove Albion at Highbury with key defender Ian Bailey out with a broken leg sustained the previous week.

[109] Charlton resigned at the end of pre-season training for the 1985–86 campaign after fans at St James' Park started calling for his dismissal after the club failed to secure the signing of Eric Gates, who instead joined Lawrie McMenemy at Sunderland.

[114] By this time, Charlton had developed his tactics, which were based on the traditional British 4–4–2 system, as opposed to the continental approach of using deep-lying midfielders, as he noted that most of the Ireland international players plied their trade in England.

[120] They ended the campaign with a 2–0 home win over Bulgaria, Paul McGrath and Kevin Moran the scorers, though Liam Brady (an ever-present in qualification) picked up a two-match suspension after lashing out late in the game after being repeatedly kicked by Bulgarian midfielder Ayan Sadakov.

[126] To qualify they only needed a point against the Netherlands at the Parkstadion, and Charlton devised a time-wasting plan with goalkeeper Packie Bonner that he was forced to abandon after referee Horst Brummeier was less than impressed.

The campaign started on hostile ground at Belfast's Windsor Park, and he had stand-in goalkeeper Gerry Peyton to thank for the point gained from a goalless draw with Northern Ireland.

[129] A series of injuries left only a skeleton squad to face Spain at the Estadio Benito Villamarín, leaving a recall for defender David O'Leary, and Ireland were beaten 2–0.

[137][138] Ireland then defeated Romania in the Second Round match at the Stadio Luigi Ferraris which went to penalties after a 0–0 draw, before the whole team had a meeting with Pope John Paul II at the Vatican.

Amateur footage of the joyous scenes became synonymous with Ireland's success that year and epitomised the sense of hope which prevailed throughout the country, especially after a decade of economic recession.

[157] They faced the Netherlands in the Round of 16; Dennis Bergkamp put the Dutch ahead on 11 minutes after Marc Overmars took advantage of a mistake by Terry Phelan, and Wim Jonk scored the second and final goal of the game from 30 yards after Packie Bonner fluffed an otherwise routine save.

From that point onwards, the Republic stuttered badly as injuries struck down key players Roy Keane, Andy Townsend, John Sheridan and Steve Staunton.

[183] On 20 July, ten days after his death, Irish fans gathered at Walkinstown roundabout in Dublin to recreate the highwater mark of Ireland's success at the 1990 World Cup under Charlton and to pay their respects.